Best advice I can give is simply to relax. I had to fly for 3 hours to do my skills test. By the time I did it I was too knackered to get stressed - I just flew the plane how I had been taught. I found it helpful to drink a can of very suger laden lemonade before hand to give the brain some more energy!
Towards the end of my skills test the examiner actually taught me some new handling techniques as well - so it doubled up as a lesson. It's hard to belive until you've done a test but the chances are the examiner will want you to pass as much as you want to pass. If you proove to them you are not a danger to yourself or anyone else whilst PIC then you'll stroll through the exam. Good luck - let us know how you get on!
